Source/WebCore/animation/AcceleratedEffectStackUpdater.cpp

/*
 * Copyright (C) 2023 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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#include "config.h"
#include "AcceleratedEffectStackUpdater.h"

#if ENABLE(THREADED_ANIMATION_RESOLUTION)

#include "Document.h"
#include "LocalDOMWindow.h"
#include "Page.h"
#include "Performance.h"
#include "RenderElement.h"
#include "RenderLayer.h"
#include "RenderLayerBacking.h"
#include "RenderLayerModelObject.h"
#include "RenderStyleConstants.h"
#include "Styleable.h"
#include <wtf/MonotonicTime.h>

namespace WebCore {

AcceleratedEffectStackUpdater::AcceleratedEffectStackUpdater(Document& document)
{
    auto now = MonotonicTime::now();
    m_timeOrigin = now.secondsSinceEpoch();
    if (RefPtr window = document.window())
        m_timeOrigin -= Seconds::fromMilliseconds(window->performance().relativeTimeFromTimeOriginInReducedResolution(now));
}

void AcceleratedEffectStackUpdater::updateEffectStacks()
{
    auto targetsPendingUpdate = std::exchange(m_targetsPendingUpdate, { });
    for (auto [element, pseudoElementIdentifier] : targetsPendingUpdate) {
        if (!element)
            continue;

        Styleable target { *element, pseudoElementIdentifier };

        auto* renderer = dynamicDowncast<RenderLayerModelObject>(target.renderer());
        if (!renderer || !renderer->isComposited())
            continue;

        auto* renderLayer = renderer->layer();
        ASSERT(renderLayer && renderLayer->backing());
        renderLayer->backing()->updateAcceleratedEffectsAndBaseValues();
    }
}

void AcceleratedEffectStackUpdater::updateEffectStackForTarget(const Styleable& target)
{
    m_targetsPendingUpdate.add({ &target.element, target.pseudoElementIdentifier });
}

} // namespace WebCore

#endif // ENABLE(THREADED_ANIMATION_RESOLUTION)